Definition of scariness in US English:

scariness

noun

informal
  • See scary

    • ‘This film is a master class in suggesting scariness when there isn't anything actually scary going on.’
    • ‘I didn't believe in the Argyle Monster, but that was the opposite of comforting, because I believed even more in the scariness of the woods in general.’
    • ‘In the weeks since, as we've told the story to a succession of friends and relatives, it has shed scariness and taken on humor.’
    • ‘In a fit of madness I decided to try it out for myself and I can vouch for its scariness.’
    • ‘I watched it during the day which destroyed most of its scariness, but I can see how it would have scared me, had I watched late at night on my own.’